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Central Heating

Boiler loud bang.

Anonymous user 09/03/2024 - 3.07 PM

Hi. My Potterton boiler stopped working. The red light is on and when I try to switch on the system I can see the flames on but after 1 minute the boiler starts making a loud banging noise. This started after emptying the hot water cylinder trying to fix a leak. Any ideas why it is happening? Is it easily fixable? I got a qualified Engineer here twice. First time he could not do much because the door to the case was out of place and missing a screw. He charged anyway. Second visit he just banged the pipes and took some water out and "said the water is dirty, you need a hot chemical flush". Took more money and left. Disgraceful!

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4 Answers

N G Installations Yorkshire limited

Rating: 5 out of 5
Wakefield
Sounds like you have a air lock in the boiler, this can happen after draining down the system. The boiler is overheating which is why you are getting the red light. Its due to the water not circulating round the system properly. It isnt always the easiest thing to sort unless you have some experience with bleeding systems, they can be quite stubborn.
Answered26 January 2020
13

Anderson Heating & Gas

Rating: 4.8 out of 5
Northampton
Check for air lock Check for low water in the sytem Check heating header ball valve is not stuck .
Answered7 February 2020
1

Technical Energy Uk Ltd

Rating: 5 out of 5
Sheffield
There is possibly air in the pump. This does not then circulate the water causing the boiler to create steam (the banging noise). Getting air out of a system can be difficult but if you fill the system in the correct sequence it should not get air locked. The pump may have ceased up if it was left without water in it. If your in Sheffield area look us up.
Answered8 February 2020
1

D & R Property and Plumbing Maintenance

Rating: 4.9 out of 5
New Romney
get a qualified heating engineer to sort it out. get a proper heating engineer,not just gas safe but a qualified heating engineer,they are not the same.
Answered7 February 2020
0